CN216236576U - Efficient treatment system for garbage squeezing water - Google Patents
Efficient treatment system for garbage squeezing water Download PDFInfo
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- CN216236576U CN216236576U CN202122923024.2U CN202122923024U CN216236576U CN 216236576 U CN216236576 U CN 216236576U CN 202122923024 U CN202122923024 U CN 202122923024U CN 216236576 U CN216236576 U CN 216236576U
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Abstract
The utility model relates to a high-efficiency treatment system of garbage squeezing water, which comprises a pretreatment system, a baffling anaerobic tank, a biochemical treatment system and a sludge tank, wherein the pretreatment system comprises a grit chamber, a grid, an oil separation tank, a spiral-stacked dehydrator, a regulating tank and an air-floating coagulation integrated tank; the device comprises a grit chamber, an oil separation chamber and an adjusting tank, wherein the grit chamber, the oil separation chamber and the adjusting tank are sequentially arranged, a grid is arranged in the grit chamber, the oil separation chamber is connected with a water inlet of a spiral shell stacking dehydrator, the spiral shell stacking dehydrator is connected into the adjusting tank, and a water pump connected with an inlet of an air floatation and coagulation integrated tank is arranged in the adjusting tank; the outlet of the air floatation and coagulation integrated tank is connected with a baffling anaerobic tank, and the baffling anaerobic tank is connected with a biochemical treatment system. The utility model has reasonable design of the whole flow, stable and reliable treatment effect, strong impact load resistance and less secondary pollution.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a high-efficiency treatment system for garbage squeezing water.
Background
The kitchen wastes of the domestic garbage in China are abundant, the water content is high, the heat value is lower, and the concentration of various pollutants in the extruded garbage percolate is high, and the pollution harm is large. The garbage extrusion station extrudes leachate with high pollutant concentration and strong stink, contains most organic matters such as humic high-molecular carbohydrate and medium molecular weight gray aspergillus flavus acid substances, and is black brown. Due to the influences of a plurality of factors such as geographical positions, living environments, garbage sources and the like, the water quality components of the leachate extruded by the garbage extrusion station are complex, the pollutant concentration changes greatly, and the difference of main pollutant indexes such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like is more than 20%. The garbage squeezing water has the characteristic of water quantity and water quality of high-concentration organic wastewater which is typically difficult to treat, namely, the water quantity and the water quality of the wastewater are greatly changed; the concentration of the wastewater pollutants is high.
The biological treatment utilizes the metabolism function of aerobic or anaerobic microorganisms to decompose pollutants in the sewage, and can remove pollutants such as COD (chemical oxygen demand), total nitrogen and the like in the wastewater; however, in the treatment of landfill leachate, the biological treatment effect is not ideal due to poor biodegradability of the landfill leachate and unbalanced carbon-nitrogen ratio.
The advanced oxidation process utilizes the strong oxidizing property of chemical substances to oxidize and decompose organic substances which are difficult to biodegrade in sewage, has the technologies of Fenton oxidation, ozone oxidation and the like, and has the characteristics of strong oxidizing property, high reaction speed and the like, but in practical application, because the pollutant components of the landfill leachate are complex and have large chroma, the standard discharge is difficult to realize by a single advanced oxidation technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and provide the efficient treatment system for the garbage squeezing water, and the treatment effect is stable and reliable.
The purpose of the utility model is realized as follows:
a high-efficiency treatment system for garbage squeezing water comprises a pretreatment system, a baffling anaerobic tank, a biochemical treatment system and a sludge tank, wherein the pretreatment system comprises a grit chamber, a grid, an oil separation tank, a spiral-stacked dehydrator, an adjusting tank and an air-floating coagulation integrated tank; the device comprises a grit chamber, an oil separation chamber and an adjusting tank, wherein the grit chamber, the oil separation chamber and the adjusting tank are sequentially arranged, a grid is arranged in the grit chamber, the oil separation chamber is connected with a water inlet of a spiral shell stacking dehydrator through a pipeline, a water outlet of the spiral shell stacking dehydrator is connected into the adjusting tank through a pipeline, and a water pump is arranged in the adjusting tank and connected with an inlet of an air floatation and coagulation integrated tank through a pipeline; the outlet of the air floatation and coagulation integrated tank is connected with a baffling anaerobic tank, the baffling anaerobic tank is connected with a primary denitrification tank, the primary denitrification tank is connected with a primary nitrification tank, the primary nitrification tank is connected with a secondary denitrification tank, the secondary denitrification tank is connected with a secondary nitrification tank, and the secondary nitrification tank is connected with an MBR (membrane bioreactor); the sludge outlet of the oil separation tank, the air flotation and coagulation integrated tank, the baffling anaerobic tank and the MBR membrane bioreactor are connected to a sludge tank, and the sludge tank is connected with a plate-and-frame filter press through a sludge pump.
Further, the spiral shell overlapping dehydrator is connected with a PAM dosing device and an alkali dosing device through a pipeline mixer.
Further, the air flotation and coagulation integrated tank is connected with a PAC dosing device, an acid dosing device and a PAM dosing device through a pipeline mixer.
Further, the secondary denitrification tank is connected with a carbon source dosing device through a pipeline.
Furthermore, a PAM dosing device is connected to a pipeline between the sludge pump and the plate-and-frame filter press through a pipeline mixer.
Further, the baffling anaerobic pool comprises a water inlet distribution system, a reaction zone, a three-phase separator, a water outlet system and a sludge discharge system.
Further, a water outlet of the plate-and-frame filter press is connected with an adjusting tank.
Compared with the prior art, the utility model has the beneficial effects that:
according to the pretreatment process, the spiral shell overlapping dehydrator and the air flotation and coagulation integrated device are added to remove suspended matters, colloids and animal and vegetable oil in the garbage extrusion penetrating fluid and adjust the pH value of the garbage extrusion penetrating fluid, the spiral shell overlapping dehydrator breaks emulsion of emulsified oil and removes most suspended particle impurities in water, the air flotation and coagulation sedimentation device mainly removes oil stains, heavy metal ions and the like contained in wastewater, and the pretreatment process is more beneficial to subsequent anaerobic and biochemical treatment and more efficient and stable for garbage percolate and other sewage containing high-concentration and difficultly-degradable organic matters.
The anaerobic- (denitrification + nitrification) -MBR process provided by the utility model can remove biochemical organic matters and ammonia nitrogen, the removal rate of the ammonia nitrogen reaches more than 96-99%, the denitrification effect can be fully ensured, and the total nitrogen of the effluent can stably reach the standard. The denitrification-nitrification process is an improvement and optimization of the A/O process, wherein denitrification represents anoxic section A; the nitration represents an O section carbon oxidation section, namely carbon-containing organic matters are removed by oxidation, and the O section is divided into a carbon oxidation section and a nitration section; the carbon-nitrogen ratio of the water entering the carbon oxidation section is relatively high, and the dissolved oxygen cannot be too high, so that heterotrophic bacteria take advantage in the section, and the COD removal effect is exerted to the maximum extent; in the nitration stage due toMost COD is removed, the carbon-nitrogen ratio of inlet water is low, and dissolved oxygen is controlled at a high level, so that ammonia nitrogen is fully nitrified; most of leachate organic matters and ammonia nitrogen are converted into inorganic matters through the carbon oxidation-nitrification-denitrification process (C0)2、H20、N2) Removed from the water and a small portion converted to cellular material which was removed from the system by periodic sludge discharge.
The utility model has reasonable design of the whole flow, adopts the combination of the pretreatment process, the biochemical treatment process and the membrane advanced treatment process, and has stable and reliable treatment effect, strong impact load resistance, high automation degree, low sludge yield and less secondary pollution.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic diagram of the pretreatment system of the present invention.
FIG. 4 is a schematic view of the structure of the biochemical treatment system according to the present invention.
Wherein:
the device comprises a grit chamber 1, a grid 2, an oil separation tank 3, a spiral-stacked dehydrator 4, an adjusting tank 5, an air flotation and coagulation integrated tank 6, a baffled anaerobic tank 7, a primary denitrification tank 8, a primary nitrification tank 9, a secondary denitrification tank 10, a secondary nitrification tank 11, an MBR membrane bioreactor 12, a sludge tank 13, a plate and frame filter press 14, a PAC dosing device 15, an acid dosing device 16, a PAM dosing device 17, an alkali dosing device 18 and a carbon source dosing device 19.
Detailed Description
Example 1:
referring to fig. 1-4, the utility model relates to a high-efficiency treatment system for garbage squeezing water, which comprises a pretreatment system, a baffling anaerobic tank 7, a biochemical treatment system and a sludge tank 13, wherein the pretreatment system comprises a grit chamber 1, a grating 2, an oil separation tank 3, a spiral-stacked dehydrator 4, an adjusting tank 5 and an air-floating coagulation integrated tank 6, and the biochemical treatment system comprises a primary denitrification tank 8, a primary nitrification tank 9, a secondary denitrification tank 10, a secondary nitrification tank 11, an MBR (membrane bioreactor) 12 and a carbon source dosing device 19.
The exit linkage baffling anaerobism pond 7 of integrative pond 6 is thoughtlessly congealed in air supporting, baffling anaerobism pond 7 is connected one-level denitrification pond 8, and one-level denitrification pond 8 is connected one-level and is nitrified the pond 9, and one-level nitrification pond 9 is connected second grade denitrification pond 10, and second grade denitrification pond 10 is connected second grade and is nitrified pond 11, and second grade nitrification pond 11 is connected MBR membrane bioreactor 12, MBR membrane bioreactor 12's delivery port is taken over to sewage treatment plant.
The baffling anaerobic tank 7 comprises a water inlet distribution system, a reaction zone, a three-phase separator, a water outlet system and a sludge discharge system, wherein the water inlet distribution system enables organic matters in the wastewater to be uniformly distributed, is favorable for full contact reaction between the wastewater and microorganisms, is a key for improving the volume utilization rate of the reactor, and has the functions of stirring and mixing; the reaction zone comprises a sludge bed and a sludge suspension layer zone, is the core of the anaerobic reactor, is a zone for culturing and enriching anaerobic microorganisms, and is used for generating biochemical reaction between the wastewater and the microorganisms, wherein organic matters are mainly decomposed by anaerobic bacteria; the water outlet system is mainly used for uniformly collecting clear water on the liquid level of the settling zone and discharging the clear water out of the reactor; the sludge discharge system regularly discharges the residual sludge in the baffling anaerobic tank out of the baffling anaerobic tank.
The spiral shell overlapping dehydrator 4 is connected with a PAM dosing device 17 and an alkali dosing device 18 through a pipeline mixer, and the spiral shell overlapping dehydrator 4 is dosed with chemicals to break emulsion oil and remove most suspended particle impurities in water; the air flotation and coagulation integrated tank 6 is connected with a PAC dosing device 15, an acid dosing device 16 and a PAM dosing device 17 through a pipeline mixer, and oil stains, heavy metal ions and the like contained in the wastewater are removed.
The secondary denitrification tank 10 is connected with a carbon source dosing device 19 through a pipeline, a carbon oxidation section is added, the carbon oxidation and nitrification processes are separately carried out and respectively controlled, the optimal ecological niches of different floras are ensured, the water inlet carbon-nitrogen ratio of the nitrification section is lower, the higher D0 level of the nitrification section is controlled, and more favorable environmental conditions are provided for nitrifying bacteria.
The mud outlet of the oil separation tank 3, the air flotation and coagulation integrated tank 6, the baffling anaerobic tank 7 and the MBR membrane bioreactor 12 is connected to a sludge tank 13, the sludge tank 13 is connected with a plate and frame filter press 14 through a sludge pump, a PAM dosing device 17 is connected to a pipeline between the sludge pump and the plate and frame filter press 14 through a pipeline mixer, a regulating tank 5 is connected to a water outlet of the plate and frame filter press 14, and filtrate is discharged to the regulating tank 5.
A frame type stirrer is arranged in the sludge tank 13.
The primary nitrification tank 9, the secondary nitrification tank 11 and the MBR membrane bioreactor 12 are respectively connected with a fan.
The working principle is as follows:
rubbish extrusion filtration liquid flows into the processing station through the grid automatically, at first, get into the grit chamber, realize preliminary solid-liquid separation here, get rid of partial suspended solid, filtration liquid in oil removal pond promotes through the water pump and gets into fold spiral shell hydroextractor, add the medicament with the emulsion oil breakdown and get rid of most suspended particle impurity in the aquatic, then the clear solution gets into the equalizing basin, set up the dive stirring in the equalizing basin, through stirring intensive mixing, mixed waste water promotes to the integrative device of air supporting coagulation through the water pump, waste water after the preliminary treatment flows to baffling anaerobic reactor automatically, because rubbish extrusion filtration liquid contains the polymer carbohydrate of humus class higher, its anaerobism is effectual, waste water after the anaerobism gets into biochemical treatment system, carry out two-stage A/O + MBR membrane bioreaction, biochemical removal can biochemical organic matter and carry out biological nitrogen removal.
The sludge generated in the treatment process automatically flows into a sludge tank, is lifted by a screw pump and enters a plate-and-frame filter press for filter pressing, and is transported and treated together with sludge generated in the treatment process of the screw-stacking dehydrator; and returning the filter-pressed clear liquid to the regulating tank.
The wastewater after treatment meets the following water quality standards, and the water quality requirements are shown in the following table 1:
TABLE 1
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a high-efficient processing system of rubbish extrusion water which characterized in that: the device comprises a pretreatment system, a baffling anaerobic tank (7), a biochemical treatment system and a sludge tank (13), wherein the pretreatment system comprises a grit chamber (1), a grid (2), an oil separation tank (3), a screw-stacking dehydrator (4), an adjusting tank (5) and an air-flotation coagulation integrated tank (6), and the biochemical treatment system comprises a primary denitrification tank (8), a primary nitrification tank (9), a secondary denitrification tank (10), a secondary nitrification tank (11), an MBR (membrane bioreactor) (12) and a carbon source dosing device (19); the device comprises a grit chamber (1), an oil separation chamber (3) and an adjusting tank (5), wherein the grit chamber (1) is internally provided with a grid (2), the oil separation chamber (3) is connected with a water inlet of a spiral shell stacking dehydrator (4) through a pipeline, a water outlet of the spiral shell stacking dehydrator (4) is connected into the adjusting tank (5) through a pipeline, and a water pump connected with an inlet of an air flotation and coagulation integrated tank (6) is arranged in the adjusting tank (5); an outlet of the air flotation and coagulation integrated tank (6) is connected with a baffling anaerobic tank (7), the baffling anaerobic tank (7) is connected with a primary denitrification tank (8), the primary denitrification tank (8) is connected with a primary nitrification tank (9), the primary nitrification tank (9) is connected with a secondary denitrification tank (10), the secondary denitrification tank (10) is connected with a secondary nitrification tank (11), and the secondary nitrification tank (11) is connected with an MBR (membrane bioreactor) (12); the sludge outlet of the oil separation tank (3), the air flotation and coagulation integrated tank (6), the baffling anaerobic tank (7) and the MBR membrane bioreactor (12) is connected to a sludge tank (13), and the sludge tank (13) is connected with a plate and frame filter press (14) through a sludge pump.
2. The system for the efficient treatment of waste pressing water as claimed in claim 1, wherein: the spiral shell overlapping dehydrator (4) is connected with a PAM dosing device (17) and an alkali dosing device (18) through a pipeline mixer.
3. The system for the efficient treatment of waste pressing water as claimed in claim 1, wherein: the air flotation and coagulation integrated tank (6) is connected with a PAC dosing device (15), an acid dosing device (16) and a PAM dosing device (17) through a pipeline mixer.
4. The system for the efficient treatment of waste pressing water as defined in claim 1, wherein: the secondary denitrification tank (10) is connected with a carbon source dosing device (19) through a pipeline.
5. The system for the efficient treatment of waste pressing water as claimed in claim 1, wherein: and a pipeline between the sludge pump and the plate-and-frame filter press (14) is connected with a PAM dosing device (17) through a pipeline mixer.
6. The system for the efficient treatment of waste pressing water as claimed in claim 1, wherein: the baffling anaerobic tank (7) comprises a water inlet distribution system, a reaction zone, a water outlet system and a sludge discharge system.
7. The system for the efficient treatment of waste pressing water as claimed in claim 1, wherein: and a water outlet of the plate-and-frame filter press (14) is connected with the regulating tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923024.2U CN216236576U (en) | 2021-11-26 | 2021-11-26 | Efficient treatment system for garbage squeezing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122923024.2U CN216236576U (en) | 2021-11-26 | 2021-11-26 | Efficient treatment system for garbage squeezing water |
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| Publication Number | Publication Date |
|---|---|
| CN216236576U true CN216236576U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122923024.2U Active CN216236576U (en) | 2021-11-26 | 2021-11-26 | Efficient treatment system for garbage squeezing water |
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| CN (1) | CN216236576U (en) |
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- 2021-11-26 CN CN202122923024.2U patent/CN216236576U/en active Active
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